Pours drinks 2 times

[MrTwinkleMoon]

The bartender pours one drink than finishes the progress but without any extra input it pours a second drink. It's not possible to do anything between those two processes. On some boots of the Pi it does only pour one at a time but that's gone on the next restart.

[atainter]

Sounds like you have a hardware issue -- the button GPIO pins are probably grounding out while the drink is being pour (which calls the button interrupt). You could try switching interrupts so they trigger on a high input, but it would take some rewiring.

[MrTwinkleMoon]

That wouldn't be a problem. Could you explain me what to do exectly? That would be a huge help. Also it always two times, after that I'm able to control it again until I pour the next drink than it will pour two times again.

[atainter]

No problem. I used this guide when I originally programmed it. You'll want to make the changes so the button is similar to the button on pin #24 (we implemented the ones on 23/17 in our code).

http://raspi.tv/2013/how-to-use-interrupts-with-python-on-the-raspberry-pi-and-rpi-gpio-part-3

[MrTwinkleMoon]

Thanks, I will try that.

[MrTwinkleMoon]

Changed the selection Button to an rising edge detection but when I tried it the Oled was Converted, so everything black was white and vice verca. Also it detected the button push but it fell into a loop, not only was it doing it two times as before but it didn't want to stop. Now gone back to original code and wiring and somehow the Oled is still converted... (Oled was just a bad connection, but rest stays the same)

[MrTwinkleMoon]

I also didn't install the LED strip, don't know if thats connected to this?

[atainter]

Weird. Sounds like the OLED library might be conflicting with the button pins somehow. I would try either switching the pins for the buttons or commenting out all calls to the OLED screen (menu prints in the terminal).

[MrTwinkleMoon]

I deconnected the grounded pins of the buttons and strangly he randomly started to pour a drink right now. Is that even possible?

[atainter]

It's possible. Sounds like your buttons are misconfigured.

[MrTwinkleMoon]

OK, I didn't used excectly the same ones as you but also momentary switches so I thoght that would be alright or are there diferences which could cause these problem?

[atainter]

I don't think the buttons are causing an issue. It's probably because the interrupts for the buttons are misconfigured.

[MrTwinkleMoon]

How am I able to adapt the interrupts for my buttons?

[atainter]

Take a look at that link I sent. They can trigger on either high or low, but make sure they're wired like that guide depending on what you do.

Also try using different GPIO pins for the buttons and commenting out calls that turn on the screen.

[MrTwinkleMoon]

Changed the GPIO pins, after rebooting everything worked fine but when I took the Pi from the power ( not letting him shut down - that shouldn't cause this right?) the same pattern started again. Wondering why it worked and then suddenly not anymore.

[MrTwinkleMoon]

Also commented out everything that turned on the sreen but after that he didn't recognise any button push anymore.